123040426 has 32 divisors (see below), whose sum is σ = 197568000. Its totient is φ = 57369600.

The previous prime is 123040403. The next prime is 123040427. The reversal of 123040426 is 624040321.

It is a happy number.

It is a super-2 number, since 2×123040426² = 30277892860522952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123040397 and 123040406.

It is not an unprimeable number, because it can be changed into a prime (123040427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246325 + ... + 246823.

It is an arithmetic number, because the mean of its divisors is an integer number (6174000).

Almost surely, 2^123040426 is an apocalyptic number.

123040426 is a deficient number, since it is larger than the sum of its proper divisors (74527574).

123040426 is a wasteful number, since it uses less digits than its factorization.

123040426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 123040426 is about 11092.3589015141. The cubic root of 123040426 is about 497.3734614164.

Adding to 123040426 its reverse (624040321), we get a palindrome (747080747).

The spelling of 123040426 in words is "one hundred twenty-three million, forty thousand, four hundred twenty-six".